CONSOLIDATED STATEMENTS OF CASH FLOWS - Unaudited - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
OPERATING ACTIVITIES
Net Income	$ 28,748	$ 12,973
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	21,685	20,225
Stock-based compensation expense	1,184	2,357
Net gain (loss) on sales of real estate investments and non-operating real estate	(10,308)	40
Changes in operating assets and liabilities:
Accrued income and other assets	2,239	1,625
Accounts payable, accrued expenses and prepaid rent	(22,310)	(13,671)
Other	476	264
NET CASH PROVIDED BY OPERATING ACTIVITIES	21,714	23,813
INVESTING ACTIVITIES
Real estate development	(31,212)	(22,178)
Purchases of real estate	0	(20,611)
Real estate improvements	(5,158)	(4,250)
Net proceeds from sales of real estate investments and non-operating real estate	16,826	773
Repayments on mortgage loans receivable	1,958	32
Changes in accrued development costs	8,713	5,153
Changes in other assets and other liabilities	(2,344)	(3,286)
NET CASH USED IN INVESTING ACTIVITIES	(11,217)	(44,367)
FINANCING ACTIVITIES
Proceeds from unsecured bank credit facilities	91,387	84,734
Repayments on unsecured bank credit facilities	(85,634)	(76,518)
Repayments on secured debt	(2,767)	(3,526)
Debt issuance costs	(88)	(87)
Distributions paid to stockholders (not including dividends accrued on unvested restricted stock)	(22,736)	(21,515)
Proceeds from common stock offerings	14,466	39,456
Proceeds from dividend reinvestment plan	57	57
Other	(5,161)	(2,525)
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES	(10,476)	20,076
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	21	(478)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	16	522
CASH AND CASH EQUIVALENTS AT END OF PERIOD	37	44
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for interest, net of amount capitalized of $1,602 and $1,646 for 2017 and 2016, respectively	$ 7,141	$ 7,721